27430978163 has 2 divisors, whose sum is σ = 27430978164. Its totient is φ = 27430978162.

The previous prime is 27430978117. The next prime is 27430978177. The reversal of 27430978163 is 36187903472.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 27430978163 - 2²⁰ = 27429929587 is a prime.

It is not a weakly prime, because it can be changed into another prime (27430978103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13715489081 + 13715489082.

It is an arithmetic number, because the mean of its divisors is an integer number (13715489082).

Almost surely, 2^27430978163 is an apocalyptic number.

27430978163 is a deficient number, since it is larger than the sum of its proper divisors (1).

27430978163 is an equidigital number, since it uses as much as digits as its factorization.

27430978163 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1524096, while the sum is 50.

The spelling of 27430978163 in words is "twenty-seven billion, four hundred thirty million, nine hundred seventy-eight thousand, one hundred sixty-three".